[avr-chat] avrdude fails to write

[Pedro Vaz Teixeira]

Hi.

 I'm trying to write a hex file into a at90s1200, but avrdude fails to write:

avrdude -p 1200 -c dapa -E reset -U flash:w:avrisp.hex:i

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9001
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be  
performed
         To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "avrisp.hex"
avrdude: writing flash (1010 bytes):

Writing |                                                    | 0%  
0.00s ***failed;
 ***failed;
 ***failed;
 ***failed;

which repeats until the bar reaches 100%:

Writing | ################################################## | 100% 29.13s

avrdude: 1010 bytes of flash written
avrdude: verifying flash memory against avrisp.hex:
avrdude: load data flash data from input file avrisp.hex:
avrdude: input file avrisp.hex contains 1010 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.32s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0001
         0xc0 != 0x80
avrdude: verification error; content mismatch

avrdude done.  Thank you.

I've also tried to read both the fuse bits and the lock bits, but it  
returns the following in both cases:

avrdude -p 1200 -c dapa -E reset -U lock:r:cmd:m (fuse:r:cmd:m)

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9001
avrdude: reading lock memory:

Reading |                                                    | 0%  
0.00savr_read(): error reading address 0x0000
    read operation not supported for memory "lock" (fuse)
avrdude: failed to read all of lock memory, rc=-2

avrdude done.  Thank you.

Could someone please help me?

Thanks,

Pedro